package com.leyou.item.service;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.leyou.common.pojo.PageResult;
import com.leyou.item.mapper.BrandMapper;
import com.leyou.item.pojo.Brand;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import tk.mybatis.mapper.entity.Example;

import java.util.List;

@Service
public class BrandService {

    @Autowired
    private BrandMapper brandMapper;


    public PageResult<Brand> queryBrandByPageAndSort(Integer page, Integer rows, String sortBy, boolean desc, String key) {


        //开始分页
        PageHelper.startPage(page,rows);
        //过滤
        Example example = new Example(Brand.class);
        if (StringUtils.isNotBlank(key)){
            example.createCriteria().andLike( "name",  "%" + key + "%" ).orEqualTo("letter",key.toUpperCase());
        }
        if (StringUtils.isNotBlank(sortBy)) {
            //排序
            String orderByClause = sortBy + (desc ? " DESC" : " ASC") ;
            example.setOrderByClause(orderByClause);
        }

        //查询
        Page<Brand> pageInfo = (Page<Brand>) brandMapper.selectByExample(example);
        //返回结果
        return new PageResult<>(pageInfo.getTotal(),pageInfo);

    }

    /**
     * 新增品牌信息 两张表
     * @param brand
     * @param cids
     */
    @Transactional
    public void saveBrand(Brand brand, List<Long> cids) {
        //新增品牌信息
        this.brandMapper.insertSelective(brand);

        //新增品牌和分类中间表
        for (Long cid : cids) {
            this.brandMapper.insertCategoryBrand(cid,brand.getId());
        }
    }


    /**
     * 修改品牌信息 两张表
     * @param brand
     * @param cids
     */
    @Transactional
    public void updateBrand(Brand brand, List<Long> cids) {

        //先删除原来的

        this.brandMapper.updateByPrimaryKeySelective(brand);

        this.brandMapper.deleteCategoryBrand(brand.getId());

        for (Long cid : cids) {
            this.brandMapper.insertCategoryBrand(cid,brand.getId());
        }
    }


    public List<Brand> queryBrandByCategory(Long cid) {

       return this.brandMapper.queryByCategoryId(cid);


    }

    public List<Brand> queryBrandByIds(List<Long> ids) {
        return this.brandMapper.selectByIdList(ids);
    }
}
